Corrosion behavior of titanium in response to sulfides produced by Porphyromonas gingivalis

Harada, Rino; Kokubu, Eitoyo; Kinoshita, Hideaki; Yoshinari, Masao; Ishihara, Kazuyuki; Kawada, Eiji; Takemoto, Shinji

doi:10.1016/j.dental.2017.10.004

Cited by 16 publications

(15 citation statements)

References 35 publications

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“…P. gingivalis and P. intermedia are two of the most common species found in reports associated with periodontal infections 27,39,40,46‐49 . On the other hand, the primary bacteria colonizing the implant surface are called early colonizers and includes species like S. gordonii , S. oralis , S. sanguinis , and S. mitis 50,51 .…”

Section: Discussionmentioning

confidence: 99%

Antibiofilm effects of titanium surfaces modified by laser texturing and hot‐pressing sintering with silver

et al. 2021

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Peri‐implant diseases are one of the main causes of dental implant failure. New strategies for dental implants manufacturing have been developed to prevent the accumulation of bacteria and related inflammatory reactions. The main aim of this work was to develop laser‐treated titanium surfaces covered with silver that generate a electrical dipole to inhibit the oral bacteria accumulation. Two approaches were developed for that purpose. In one approach a pattern of different titanium dioxide thickness was produced on the titanium surface, using a Q‐Switched Nd:YAG laser system operating at 1064 nm. The second approach was to incorporate silver particles on a laser textured titanium surface. The incorporation of the silver was performed by laser sintering and hot‐pressing approaches. The anti‐biofilm effect of the discs were tested against biofilms involving 14 different bacterial strains growth for 24 and 72 hr. The morphological aspects of the surfaces were evaluated by optical and field emission guns scanning electronical microscopy (FEGSEM) and therefore the wettability and roughness were also assessed. Physicochemical analyses revealed that the test surfaces were hydrophilic and moderately rough. The oxidized titanium surfaces showed no signs of antibacterial effects when compared to polished discs. However, the discs with silver revealed a decrease of accumulation of Porphyromonas gingivalis and Prevotella intermedia strains. Thus, the combination of Nd:YAG laser irradiation and hot‐pressing was effective to produce silver‐based patterns on titanium surfaces to inhibit the growth of pathogenic bacterial species. The laser parameters can be optimized to achieve different patterns, roughness, and thickness of the modified titanium layer regarding the type and region of the implant.

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Section: Discussionmentioning

confidence: 99%

Antibiofilm effects of titanium surfaces modified by laser texturing and hot‐pressing sintering with silver

et al. 2021

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“…One of the problems with prosthesis degradation occurs due to contact with another alloy, especially with the implant. The alloys more often used as dental implant manufacturing are commercially pure titanium (ASTM F67) and Ti-6Al-4V alloy (ASTM F136) [4][5][6] . For the prosthesis components the Co-Cr-Mo (ASTM F1537) and Ti-6Al-4V (ASTM F136) are the most used; for abutment screw Ti-6Al-4V (ASTM F136) is used.…”

Section: Literature Reviewmentioning

confidence: 99%

Influence of oral pH Environment in the Corrosion Resistance of Cr-Co-Mo alloy Used for Dentistry Prosthetic Components

et al. 2019

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The Cr-Co-Mo alloys are commonly used in dentistry for prosthetic components and dental implant supported prosthesis. These alloys present high corrosion resistance owing to a passive oxide film on the surface. However, the oral environment is an aggressive system, due to pH variation, chloride and fluoride ions presence, that can decrease the metal alloy corrosion resistance. Although Cr-Co-Mo alloys have been used for a long time, their electrochemical properties on different pH have not been studied yet. This study aimed to evaluate the electrochemical properties of Cr-Co-Mo alloy in NaCl 0.9% solution in different pH and mouthwash solution. To imitate the oral environment, electrolytes with a pH equal to 2, 3, and 6 were used. Corrosion studies were performed by open circuit potential observation, potentiodynamic polarization curve, chronoamperometry and electrochemical impedance. The results showed that the analyzed alloy has good corrosion resistance under experimental conditions, although the acidified NaCl 0.9% solution increased the corrosion current, particularly in cathodic potentials.

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“…Although TiO 2 nanotubes demonstrate excellent corrosion resistance and biocompatibility [ 15 , 16 ], previous studies have shown that oral bacteria not only contribute to titanium corrosion but also can expedite the process [ 4 , 17 , 18 ]. Our previous research exhibited the effect of silicon carbide (SiC) in decreasing surface corrosion, fracture, and bacterial adhesion.…”

Section: Introductionmentioning

confidence: 99%

Nanostructured Surfaces to Promote Osteoblast Proliferation and Minimize Bacterial Adhesion on Titanium

et al. 2021

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The objective of this study was to investigate the potential of titanium nanotubes to promote the proliferation of human osteoblasts and to reduce monomicrobial biofilm adhesion. A secondary objective was to determine the effect of silicon carbide (SiC) on these nanostructured surfaces. Anodized titanium sheets with 100–150 nm nanotubes were either coated or not coated with SiC. After 24 h of osteoblast cultivation on the samples, cells were observed on all titanium sheets by SEM. In addition, the cytotoxicity was evaluated by CellTiter-BlueCell assay after 1, 3, and 7 days. The samples were also cultivated in culture medium with microorganisms incubated anaerobically with respective predominant periodontal bacteria viz. Porphyromonas gingivalis, Treponema denticola, and Tannerella forsythia as monoinfection at 37 °C for 30 days. The biofilm adhesion and coverage were evaluated through surface observation using Scanning Electron Microscopy (SEM). The results demonstrate that Ti nanostructured surfaces induced more cell proliferation after seven days. All groups presented no cytotoxic effects on human osteoblasts. In addition, SEM images illustrate that Ti nanostructured surfaces exhibited lower biofilm coverage compared to the reference samples. These results indicate that Ti nanotubes promoted osteoblasts proliferation and induced cell proliferation on the surface, compared with the controls. Ti nanotubes also reduced biofilm adhesion on titanium implant surfaces.

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Corrosion behavior of titanium in response to sulfides produced by Porphyromonas gingivalis

Cited by 16 publications

References 35 publications

Antibiofilm effects of titanium surfaces modified by laser texturing and hot‐pressing sintering with silver

Antibiofilm effects of titanium surfaces modified by laser texturing and hot‐pressing sintering with silver

Influence of oral pH Environment in the Corrosion Resistance of Cr-Co-Mo alloy Used for Dentistry Prosthetic Components

Nanostructured Surfaces to Promote Osteoblast Proliferation and Minimize Bacterial Adhesion on Titanium

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